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Experimental determination of the helium 2 3P1-1 1S0 transition rate

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dc.contributor.authorDall, Roberten_AU
dc.contributor.authorByron, Lesaen_AU
dc.contributor.authorTruscott, Andrewen_AU
dc.contributor.authorBaldwin, Kennethen_AU
dc.date.accessioned2009-09-16T03:56:07Zen_US
dc.date.accessioned2010-12-20T06:04:33Z
dc.date.available2009-09-16T03:56:07Zen_US
dc.date.available2010-12-20T06:04:33Z
dc.date.created15/01/2008en_AU
dc.date.issued2008en_AU
dc.date.updated2015-12-09T07:17:39Z
dc.description.abstractWe present the first experimental determination of the 2 3P1–1 1S0 transition rate in helium and compare this measurement with theoretical quantum-electrodynamic predictions. The experiment exploits the very long (∼1  minute) confinement times obtained for atoms magneto-optically trapped in an apparatus used to create a Bose-Einstein condensate of metastable (2 3S1) helium. The 2 3P1–1 1S0 transition rate is measured directly from the decay rate of the cold atomic cloud following 1083 nm laser excitation from the 2 3S1 to the 2 3P1 state, and from accurate knowledge of the 2 3P1 population. The value obtained is 177±8  s-1, which agrees very well with theoretical predictions, and has an accuracy that compares favorably with measurements for the same transition in heliumlike ions higher in the isoelectronic sequence.
dc.format.extent4 pagesen_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.citationPhysical Review Letters 100.2 (2008): 023001/1-4en_AU
dc.identifier.issn0031-9007 1079-7114en_AU
dc.identifier.urihttp://hdl.handle.net/10440/855
dc.language.isoen_AUen_AU
dc.provenancehttp://www.sherpa.ac.uk/romeo/index.php "Author can archive pre-print (ie pre-refereeing) … post-print (ie final draft post-refereeing) … [and] publisher's version/PDF. Link to publisher version … [and] Copyright notice required. Publisher's version/PDF can be used on … employers web site." - from SHERPA/RoMEO site (as at 25/02/10). ©2008 The American Physical Societyen_AU
dc.publisherAmerican Physical Societyen_AU
dc.rightsThe American Physical Societyen_AU
dc.sourcePhysical Review Lettersen_AU
dc.source.urihttp://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000100000002023001000001&idtype=cvips&gifs=Yesen_AU
dc.subjectKeywords: Electrodynamics; Metastable phases; Quantum electronics; Transition metals; Experimental determination; Isoelectronic sequence; Heliumen_AU
dc.titleExperimental determination of the helium 2 3P1-1 1S0 transition rateen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue2
local.bibliographicCitation.lastpage4
local.bibliographicCitation.startpage1
local.contributor.affiliationDall, Robert, Research School of Physical Sciences and Engineering, Atomic and Molecular Physics Laboratoriesen_AU
local.contributor.affiliationBaldwin, Kenneth, Research School of Physical Sciences and Engineering, Atomic and Molecular Physics Laboratoriesen_AU
local.contributor.affiliationByron, Lesa, Research School of Physical Sciences and Engineering, Atomic and Molecular Physics Laboratoriesen_AU
local.contributor.affiliationTruscott, Andrew, Research School of Physical Sciences and Engineering, Atomic and Molecular Physics Laboratoriesen_AU
local.contributor.authoruidu9901796en_AU
local.contributor.authoruidu8413914en_AU
local.contributor.authoruidu4282657en_AU
local.contributor.authoruidu4040705en_AU
local.description.notesCorrected 17 January 2008. Corrections published as Publisher's Note, PRL 100.3 (2008): 039901en_AU
local.identifier.absfor020201 - Atomic and Molecular Physicsen_AU
local.identifier.ariespublicationu4169254xPUB162en_AU
local.identifier.citationvolume100en_AU
local.identifier.doiPhysRevLett.100.023001en_AU
local.identifier.scopusID2-s2.0-38349141835
local.identifier.thomsonID000252471200025
local.type.statusPublished Versionen_AU

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